.num-selector {
  display: flex;
  flex-direction: row;
  width: .63rem;
  font-size: 0; //作用

  .item {
    width: .21rem;

    &.input{
      text-align: center;
      background-color: #efefef;
    }

    &.btn {
      background-color: #fff;
      font-size: .14rem;
    }
  }
}